The preparation process of artificial graphite is essentially a fine transition of graphitization. This process is like a magic show, transforming the originally thermodynamically unstable carbon atoms from a disordered "chaotic structure" to an orderly "graphite crystal structure" through the magical power of thermal activation. And the director behind this magic trick is the graphite electric heating furnace.
The graphite electric heating furnace uses the high-temperature heating of graphite electrodes as the source of magic, so that the electrode temperature climbs to more than 2000 degrees Celsius. However, in order to protect the graphite and the final product, the protagonists of this magic scheme, from the fate of ablation or oxidation at high temperatures, the furnace chamber is skillfully filled with inert gases, which are both protectors and messengers of heat.
Hot Spot Engine Program However, some graphite electric furnaces opt for the more economical form of nitrogen as the filling gas. In the temperature range below 1000 °C, nitrogen dutifully fulfills the task of oxidation prevention and heat transfer. However, when the temperature climbs above 1000, the nitrogen reacts with the stainless steel furnace and leaves traces of nitride on the surface of the stainless steel. These nitrides alter the surface structure of stainless steel, making it fragile and threatening the life of the equipment. Fortunately, the solution is not complicated. This problem can be easily solved by simply applying a layer of high-temperature and anti-oxidation resistant coating to the surface of the stainless steel furnace. For example, the ZS-1021 high-temperature anti-oxidation sealing coating of Beijing Zhisheng Weihua Chemical is such a guardian saint. It can withstand high temperatures up to 2300 °C, which is not only environmentally friendly and inorganic, but also perfectly combined with ZS-1011 coating, so that it can adhere tightly to the stainless steel furnace wall in a high temperature environment, providing it with solid protection. In this way, the preparation process of synthetic graphite can be carried out smoothly in a safe and stable environment.